Snowball

In Club Penguin, players had the ability to throw snowballs. This was done by first clicking the snowball icon in the toolbar (or by pressing the T key), aiming at the target and then clicking it with the left mouse button. When a snowball hit something, it made a "squish" sound. In addition, some objects around the island could also be interacted with using snowballs in certain ways, such as the Clock Tower.

Snowball types

In several rooms or during certain parties, snowballs turned into different items (such as food, bubbles, water balloons, paint balloons, trash, etc.). During Marvel Super Hero Takeovers, snowballs thrown while wearing Super Gloves were given special properties, such as freezing certain targets.
In addition, snowballs thrown by Herbert and Sam the Sasquatch had a unique sprite. While Herbert hit a penguin with a snowball, the player would be buried in a pile of snow.

Also during the Prehistoric Party 2013, if you throw a snowball while wearing a prehistoric item, you would throw meat to give to dinosaurs.

During the Hollywood Party, if you are wearing the Digital Camera the flash will appear and the stars will appear on the other penguin, this means you can see the white squares on the Become a Director catalog.

During Pi Day, if you throw a snowball in the Mine Shack, it would turn into a pie.

Club Penguin App

Players who had the Club Penguin App could throw snowballs at their online friends; which was displayed as a big snowball on the screen. When clicking the snowball, a message popped up and asked if the friend wanted to throw back a snowball.

Glitches

There was a bug in the Mine Shack, when you threw a snowball it would be round at the tracks. This bug was later fixed.

Trivia

The maximum amount of snowballs in a room was 10. If another snowball was thrown, the earliest one was removed.